My regular readers will be aware of my fascination of atmospheric effects, particularly as the sun disappears over the western horizon, but this afternoon, we were treated to some excitement on the eastern horizon, in the form of a double rainbow. I figure it’s Nature’s way of giving us something to smile about before dumping a dark, cold, rainy weekend upon us. Enjoy!

‘bow in the forest.

‘bow on the rocks.

The outer rainbow has its colors reversed.

Then, as I was transferring the above photos to my computer to upload, the western horizon turned gorgeous with a big mushroom-cloud-looking sunset formation, with some crepuscular ray action.

Have a great final weekend of January! It feels like it’s almost 2013 already!

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I took some photos just now on a grocery errand. It was so sunny when I left the building, but when I turned the corner, I found this dark looming storm cloud ready to pounce on me. If a storm pounces, does that make it cumulonimble?

I’ve wondered (but never had a good chance to check) whether a good DSLR sensor would pick up the tertiary rainbow so that it can be brought out by photo editing (probably before downsampling to to 8 bits per channel). With such a strong secondary rainbow, I wonder whether you have any .CR2s that show the tertiary rainbow.Â

I remember having to calculate where the third rainbow would be on some math exam once, but I don’t remember where we would need to look.

…and since I started typing, I went to wikipedia and learned that “Photographic evidence for the tertiary and quaternary rainbows was published, apparently for the first time, in 2011.” So this is probably more difficult than I realized. Also, it sounds like you’d need to be facing the other way.Â http://afitp.com/68

It always kills me that scientific journal articles are behind a paywall. Those articles cost $35 each to download. What the hell, Science?? Even if I could download them, the information would still probably be inaccessible for me behind the StupidWall, but I wish I could at least bang my head against it for free.

It always kills me that scientific journal articles are behind a paywall. Those articles cost $35 each to download. What the hell, Science?? Even if I could download them, the information would still probably be inaccessible for me behind the StupidWall, but I wish I could at least bang my head against it for free.

http://www.hayleycomments.com/ Hayley

Double rainbow, nice!

Anonymous

That’s pretty!Â And what great photos!Â Nice job. Now get ready for the cold.